将数据转化成json格式传递给前端

 /// <summary>
    /// 将list数据转换成json
    /// </summary>
    /// <param name=""></param>
    /// <returns></returns>
    public static string ListToJson<T>(List<T> ConfigList)
    {
        DataContractJsonSerializer json = new DataContractJsonSerializer(ConfigList.GetType());
        string szJson = "";
        //序列化
        using (MemoryStream stream = new MemoryStream())
        {
            json.WriteObject(stream, ConfigList);
            szJson = Encoding.UTF8.GetString(stream.ToArray());
        }
        return szJson;
    }